How Long Can Submarines Stay Underwater? Insights into Nuclear and Diesel-Electric Subs

Discover how long submarines can stay underwater, comparing nuclear and diesel-electric types.

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How long submarines spend underwater: Nuclear submarines can stay submerged for up to 90 days due to their on-board nuclear reactors and air purification systems. In contrast, diesel-electric submarines rely on battery power and must surface more frequently, typically every few days to weeks to recharge batteries and replenish air supplies.

FAQs & Answers

  1. What is the maximum duration for a nuclear submarine to remain submerged? Nuclear submarines can stay submerged for up to 90 days due to their on-board nuclear reactors.
  2. How do diesel-electric submarines differ in underwater duration? Diesel-electric submarines typically must surface every few days to weeks for battery recharging and air replenishment.
  3. What systems allow nuclear submarines to stay underwater for extended periods? Nuclear submarines utilize air purification systems and nuclear reactors to support long-term underwater missions.
  4. Can submarines operate without surfacing? Nuclear submarines can operate without surfacing for extended durations, while diesel-electric submarines must periodically resurface.